Loom



J. C. BROOKS.

LOOM.

I APPLICATION FILED FEB. 28, 1920- 1,377,390. ed May 10, 1921.

3 SHEETS-SHEET 1.

IhVen'ror. John C. BrooKs bym wkfiwjf At tys.

J. C. BROOKS.

LOOM.

APPLlCATlON FILED FEB. 28,1920.

Patented May 10, 1921.

3 SHEETS-SHEET 2- Inventor. John C. Brooks. by MMQW Artys.

1. 0 BROOKS.

LOOM.

APPLICATION FILED FEB. 28, 1920.

1,377,390. Patented May 10, 1921.

3 SHEETS-SHEET 3- InQeTOr. John C. Brooks.

ATTys ing my improvements a the left;

UNITED STATES PATENT OFFICE.

JOHN C. BROOKS, OF PATERSON, NEW JERSEY.

LOOM- Application filed February 28, 1920. Serial No. 361,967.

To' all whom it may concern:

Be it known that I, JOHN C. BROOKS, a citizen of the United States,residing at Paterson, in the county of Passaic, State of New Jersey,have invented newand useful Improvements in Looms, of which thefollowing description, in connection with the accompanying drawings, isa specification, like characters on the drawings representing likeparts.

This application is a continuation in part of my co-pending applicationfiled April 23, 1919, Ser. No.j292,121.

This invention relates to looms of that class in which the weft threadis laid within the warp sheds by means of an air blast, thusobviating'the use of a shuttle,-and it has particular reference to themeans for drawing off lengthsof weft from the source of supply anddelivering said lengths to the action of the air blast.

One of the objects of my present invention is to provide a constructionby which a plurality of separate weft threads may be se lectivelymanipulated so that at any pick any one of the individual weft threadsmay be inserted. Another object of my invention is to provide a novelarrangement of weft puller for drawing off definite lengths of weft fromthe source of supply and then releasing said lengths so that thereleased lengths may be blown into the warp shed by the air blast. I 4

In order to give an understanding of my invention, I have illustrated inthe drawings a selected embodiment thereof, which w1ll now be described,after which the novel features will be pointed out in the appendedclaims. 7

Figure 1 of the drawings is a front view of a portion of one end of aloom frame showlied thereto; 2 is a side view 0 Fig. 1 looking from Fig.3 is a detail view of the weft controlling device looking from theright,

Fig. 1;

Fig. 4 is a detail view showing the operation of the weft positioningmembers.

1 indicates a portion of a loom frame which may have any suitable orusual construction, 3 indicates the usual lay carried by the lay swords2 and having the hand rail 4, 5 indicates the crank shaft from which thelay is operated, 6 indicates the usual cam Specification of LettersPatent.

shaft that controlsthe harness mechanism of the loom, 7 indicates thesand roll situated at the front of the loom, and 8 indicates the gearfrom which the sand roll is driven.

These parts are or may be all as usual in looms and form no part of mypresent in vention.

The lay 3 has mounted thereon at one end thereof a nozzle 87 throughwhich the air blast 1s delivered for blowing lengths of weft across thewarp sheds. This nozzle is shown as being provided with two weft inlets88, 89 through which weft threads 95 and 94 are led, said weft threadsbeing delivered from the end of the nozzle. The nozzle is connected toan air pipe 90 constructed to deliver an air blast therethrough. Thisnozzle is supported by brackets 84, 85, and the weft threads are led tothe weft inlets through a weft guide 93 on the loom frame and otherguides 91, 92 on the lay.

My present invention relates to novel means for drawing off from asource of supply a length of either weft thread, 94 or 95 suflicient toextend across the shed, and then releasing said length so that when theair blast operates, the released length will be blown through the nozzleand across the shed.

This means for drawing ofi lengths of weft thread is in the form of anendless length. This endless chain device is shown at 22 and it issupported by a frame or guideway 11, 12 that is secured to one side ofthe loom by means of brackets 9, 10. This guideway 11, 12 comprises 'twoseparated side pieces forming between them a track through which one runof the endless chain 22 passes and by which it is guided. This chainpasses over sprocket wheels 19 and 20 which are mounted on shafts 17 and18 that are supported in brackets or arms 15 and 16 extending from theguideway 11, 12. A sprocket chain also passes around. a driving sprocketwheel 21 which is fast on the crank shaft 5. With this arrangement onerun of the sprocket chain will have a vertical direction and extendthrough the guideway ll, 12.

shown, in the drawings, which weft-pulling device comprises a block 23secured to the chain and having a plate 24 ri id therewith, from whichextends a slotte arm 25. A lever 26 is pivoted to this arm and carriesat its free end a laterally extending pin 27 which constitutes aweft-pulling member. The arm 25 also carries a fixed plate 128 having anopening through which the weftpulling pin 27 rojects. The lever 26 isacted on by a spring 29 which tends to hold it in its forward positionwith the pin 27. projecting through the opening in the plate 128. Thisis the normal position of the arts.

The weft threads 94 and 95 are positioned by suitable weft-positioningmeans, hereinafter referred to, closely ad acent the guideway 11, 12, sothat as the weft-puller is moved downwardly by the sprocket chain, itwill engage one of the weft threads and thereby draw a len h from thesource of supply 96 or 97. eans are also provided for causing theweft-pulling pin to release its engagement with the weft thread after apredetermined length has been drawn from the source of supp For thispurpose the lever 26 is provided with two cam lugs 28 and the guidewayll, 12 is provided with stationary cams 31 situated to engage the camlugs 28 as the weft uller moves downwardly. When the cam 28 engage thecams 31, the lever 26 i 1 be swung backwardly, thus withdrawing theweft-pulling pin 27 from engagement with the weft thread, the guardplate 128 serving to hold the weft thread from .movement as the weftpuller swings backwardly. As soon as the weft puller has released theweft, then the len h of the latter which has been drawn 0 is free to 13drawn through the warp sheds by the air ast. The length of weft which isdrawn off at each operation is determined by the position of the cams31.

Since the chain 22 is driven from the crank shaft of the loom it willoperate in timed relation with the lay, and by placing the weft-pullingdevices at proper locations on the chain, the separate lengths of weftwill be pulled off in proper timed relations I with the other operationsof the loom.

My invention also contemplates means for controllin the separate weftthreads and manipulating them so that either weft thread may be broughtinto position to be actuated by the weft-pulling device. The weftthreads, 94, 95 pass from the sources of supply 96 97 through eyes inthe weft-guiding arm 4 carried by the frame, 11, 12. The weft 94 passesfrom the arm 74 through eyes in two separated weft-positioning arms 35that are fast on a rock shaft 34 which is journaled in brackets 32, 33carried by the to each other, as shown plainly in Figs. 2-

and 4. The weft-positioning arms of each pair are situated on oppositesides of the, path of movement to the weft-pulling pm 27, and theportion of the weft which extends from one weft-positioning arm to theother of the pair of arms that are in horizontal position is placedroperly so as'to be engaged by the weft-pullmg pin 27. On the otherhand, the weft which is carried by the weft-positioning arms that havethe inclined position is placed out of the path of the weft pulling pinand is not actuated thereby.

Means are provided for rocking the shaft 34 so as to carry either pairof weft-positioning arms into horizontal position accord.- ing to thepattern which it is desired to'produce in the cloth.

The rock shaft 34 has a segmental gear 38 fast thereon which meshes witha gear 40 fast on the rock shaft 39 that is journaled in the brackets32, 33. This shaft 39 has an arm 41 fast thereon which carries twolaterally extending pins 42, 43.

The frame 11, -12 has a bracket 50 to which is secured two guideways 51in which a plate 52 is vertically slidable. This plate 52 has a clip orguide 54 in which is slidably mounted a horizontally extending member53, the latter carrying at its end a head .55

to which is pivoted two arms 56, 57. These.

arms are connected by a spring, 59 which tends to hold them against thesteps 58.

The member 53 is connected by a link 60 to a lever 61 which is pivotedat 62 to the loom frame. The lower end 63 of said lever is actuated by acam 64 carried on a ,cam shaft 6. But by means of these connections thehead 55 will be constantly moving to and fro in a horizontal direction.

Suitable pattern controlled means are provided for shifting the plate 52vertically 43, to a position in which the arm 56 isin a position toengage the pin 42. Pivoted to the bracket 50 is a lever 71 which carriesa pin 72 adapted to engage a depending projection extending from theplate 52. This lever 71 has a cam nose 73 which is adapted to be engagedby a cam link carried by a fromthe osition shown in Fig. 3, in which thearm 5 is in position to engage the pin in this position the arm 57 is inline with the pin 43. \Vhenever a cam link comes under the cam nose 73,then the lever 71 will be raised, thus elevating the plate 52 and carring the arm 56 into line with the pin 42. he manner of yieldinglypivoting the arms 56 and 57 to the head 55 will permit the plate 52 tobe raised'because the engage-' ment of the upper side of the arm 56 withthe pin 42 will merely swing the arm downwardly. It will be rememberedthat the head 55 is reciprocating in a horizontal direction by reason ofthe cam 64, and when during such reciprocation the head has beenWithdrawn to the limit of its movement to the right, the arm 56 willassume its horizontal position in line with the pin 42. Consequently onthe next forward movement of the head, the arm 56 will engage the pin 42and will turn the cross arm 41 into the dotted line position Fig. 3.This turns the rock shaft 39 into: position to can the weftpositioningarms 35 into the horizontal position and the weft-positioning arms 36 intheir inactive osition below the horizontal as shown in ig. 4. Thisoperation will place the weft thread 94 in position to be acted upon bythe weft uller.- When the cam link 7 O is withdrawn rom-under the camnose 73, then the lever 71 and plate 52 will gravitate into the positionshown in Fig. 3, thus bringing the arm 57 into operative position to acton the pin 43 and thus restore the weft-positioning arms to the positionshown in Fig. 3.

By placing the cam links 70 at proper locations on the chain 69, eitherweft thread may be placed in operative position at any desiredintervals.

The rock shaft 34 has a disk 45 provided with notches 46, 47 and thebracket 32 has a lever 44 pivoted thereto, which is provided with a rolladapted to engage in either of the notches 46, 47, thereby to holdtheshaft 34 in either of its two positions. The lever 44 is acted on by aspring 48.

My device also comprises suitable means for gripping the Weft threadsbetween the pull-off device and the source of supply after a length hasbeen pulled off, so that when the air blast is delivered there will beno tendency for such air blast to draw added weft from the source ofsupply. This gripping device is in the form of two gripping levers 76,77 pivoted to the frame 11, 12 and acted upon by springs 78, 79 whichyieldingly holdthem against stops 100. These clamping members 76, 77 arenormally separated and are situated closely adjacent the weft-guidingarm 74.- The clamping lever 77 is actuated by the chain 22 at the propertime, thereby to close it against the clamping member 76 for the purposeof clamping the weft threads. This lever 77 has a cord or flexibleconnection '83 connected to one end thereof and leading to an arm 82fast on the rank rock shaft 80 which is journa'led in the frame 11, 12.The rock shaft 80 has an arm 81 thereon extending into the path of theweft puller, hence as the weft puller moves downwardly along .theguideway 11, 12 it will engage the arm 81, thereby rocking the shaft 80,and actuating the clamping member 77 to clamp the weft threads. This arm81 is properly situated so that the weft threads will be clamped justafter a length of either weft thread has been drawn off from the sourceof supply and before the air blast blows said length through the 'warpsheds.

The operation of the invention will be rmally one or the other of theweft threads 94, 95 is in position to be engaged by the downwardlymoving Weft pulling pin 27, and as said pin moves downwardly, it willdraw off a length of weft thread, and will then release said length whenthe weftpulling member is passing the cams 31. When this length of wefthas been released it is free from restraint. weft thread has been ulledoff, the arm 81 is actuated by the weft-pulling device, thereby causingthe clamping member 77 to clamp the weft threads adjacent theweftguiding arm 74. Just after this occurs an air blast is deliveredthrough the nozzle, thereby blowing the pulled off length of weft threadthrough the warp shed.

I claim:

1. In a loom, the combination with means to support a plurality ofweft'threads, each having its source of supply, of selective means fordrawing off a length of any Weft thread from its-source of supply andthen releasing said drawn-01f length from the Just after the'drawing-off means, and means to deliver the source of supply after saidlength of weft thread has been pulled off.

3. In a loom, the combination with means to support a plurality of weftthreads, each having its source of supply,- of a weft pulling-ofl'device adapted to pull off a length of weft from the source of supplyand then release said length, an air blast nozzle by which the releasedlength is blown into the warp shed, and means for selectively placingthe weft threads in position to be acted on by the pulling-off device.

4. In a loom, the combination with means to support a plurality of weftthreads, each havin its source of supply, of a weft pulling-o deviceadapted to pull off a length of weft from the source of supply and thenrelease said length, an air blast nozzle by which the released length isblown into the warp shed, and means for selectively placing the weftthreads in position to be acted on by the pulling-off device, and meansto grip the Weft threads between the pullin -off device and the sourceof supply a ter any length has been pulled off.

5. In a loom, the combination with a loom frame, of a movableweft-pulling pin, means to selectively manipulate and place separateweft threads into position to be acted on by the weft-pulling pin meansto cause said pin to release a weft thread after it has pulled apredetermined length from the source of supply, and an air blast nozzlefor blowing each pulled-off length of weft thread into the warp shed.

6. In a loom, the combination with a loom frame, of two pairs ofweft-guiding arms,

each adapted to support a weft thread, a

constantly moving weft-pulling pin, means to actuate said armselectively to place either weft thread in position to be acted on bythe weft-pulling pin, means to cause said drawing-off device and thesource of supply pin to release the weft thread engaged f thereby aftera certain length has been pulled from the source of supply, and means tgdleliver said pulled-off length to the warp s e 7. Ina loom, thecombination with means to support a plurality of weft threads, eachhaving its source of supply, of selective means for drawing off a lengthof any weft thread from its source of supply and then releasingsaiddrawn off length from the drawing-oil means, and means to deliver saiddrawn-off length into a Warp shed by an air blast, and means actuated bythe weft drawing-off device to grip the weft threads between saiddrawing-off device and the source of supply after each length of wefthas been drawn off.

8. In a loom, the combination with a lay, of means for drawing off alength of filling from a source of supply, and then releasing saidlength from the drawing-off means, a filling-delivery nozzle carried bythe lay and through which the drawn off length of weft thread isdelivered into a warp shed, and means actuated by the drawing-01f deviceto grip the weft thread between said after the length has been drawnoff.

In testimony whereof I have signed my v name to this specification.

JOHN C. BROOKS.

